PREMOBOARD ® (shortly: PB) is a compact expansion board (6x10cm) that allows: - 2 wireless ports (both configurable as Access Point) - 2 LAN ports (10/100) - 4 USB ports (2.0)
Wireless modules are the well known RT5370, but it can be replaced with other module as you wish. LAN and USB are managed by LAN951x.
PremoBoard ® can be controlled by any system via USB port. Anyway, PremoBorad was designed to work as an expansion of cubieboard (Both A10 and A20 models): the 2 boards together create a final product (we call it PREMOBOX ®) that works better than the two single boards separately.
WHY PremoBoard is designed to complete and expand the Cubieboard that allows "only" one LAN and 2 USB ports.